Of hartford



(No Model.)

'L. E. RHODES.

ADJUSTABLE TOOL REST.

No. 470,010. 0 Patented Mar. 1, 1892.

1 T1 :70 Y l I l'NtTn TATFS ATENT CFFICE.

LEVERET" E. RHODES, OF HARTFORD, CONNECTICUT.

ADJUSTABLE TOOL-REST.

SPECIFICATION forming part of Letters Patent No. 470,010, dated March 1,1892.

Application filed June 11, 1891. Serial No. 395,855. (No model.)

To all whom it may concern.-

Be it known that I, LEVERETT E. RHODES, a citizen of the United States,residing at Hartford, in the county of Hartford and State ofConnecticut, have invented certain new and useful Improvements inAdjustable Tool- Rests, of which the followingis aspecification.

This invention relates to adjustable tool posts or rests for lathes, theobject being to provide a tool-holding rest constructed for holding thetool at various angles to the axis of the work and to be rigidly clampedwithout varying the position thereof.

In the drawings accompanying and forming a part of this specification,Figure 1 is a plan view of a tool-rest embodying my invention. Fig. 2 isa side elevation, and Fig. 3 a front elevation, of the same. Fig. 4 is avertical section in line Ct to of Fig. 2 as seen from the left hand ofsaid figure. Fig. 5 is a central vertical section, the View being takenin line Z; Z) of Fig. 1 and a tool-holder and tool being shown in placeon the rest.

Similar characters designate like parts in all the figures.

As shown in the accompanying drawings, my improved rocking tool-restconsists of the base or slide B, adapted to be attached in the usualmanner to the tool-carriage of a lathe or like machine, and a rockingbed or rest properly located on said bed and constructed for carryingthe usual tool-holder II in a wellk-nown manner. The base or slide B isprovided with the guides 2 and 4, by means of which it is gibbed to andguided in its movements on the usual carriage. The sides of the slideare constructed to form a pair of ears 3 and 5, between which is themortise 6 for receiving the depending part 7 of the rest 0. Said part '7closely fits the mortise 6 between the ears 3 and 5 and is pivoted on apivot-pin S, which passes through the said ears and the lugs 7, thusconnecting together said rest 0 and the base. The ear 3 is bored toallow the binding-screw 10 to freely pass through it, and the ear 5 isbored and tapped to receive the threadedend of said screw. An elongatedslot or opening 12 is suitably formed in the bed C, to permit of thefree movement of the bed C on its pivot 8 when this is desired, and alsoto firmly clamp together the said bed and the base B by forciblyspringing the said ears onto the sides of thelug 7. The side walls orears 3 and 5 are concentric on their upper edges to the pivot 8 and arelet into the sides of the rest C, as will be understood by comparison ofFigs. 1, 2, 3, and 4, so that said rest bears directly on the top ofsaid side walls, which thus receive the pressure due to supporting thetool to its work. The projections or walls 14: and 16 of the base B arebored to receive the pivot-pin 18, on which pin between the said wallsis supported the nut 17. A boss or projection 20, formed on the rearwardend of the rest C, has a recess 22 formed in the under side thereof toreceive the upper projecting end 21 of the nut 17. Said projection isbored to permit of the free passage through it of the adjusting-screw'24:, and is spherically countersunk to receive the collar 25 of saidscrew. Below the web 26, that is thus formed in said projection 20between the said spherical countersink and the recess v 22, a check-nut27 is fixed on the screw 24, to serve as a collar, the under side ofsaid web 26 being convex in form and the contiguous face of the nut 27being shaped to nicely fit the same. \Vhen thus constructed and fittedup, the device constitutes ajoint, permitting of the required lateralorswingingmovement of the screw The projecting end 21 of the part 17 isbored and tapped to receive the screw 24, which is fitted to turnclosely therein, so that the operator by applying a Wrench to thesquared head of said screw is enabled to adjust'the rest Con its pivot,as may be required. Said rest has or may have a pair of T-slots 28 and30 wherein to receive the usual tool-holder H, carrying the cutting-toolT, which rests on the collar 32, all in a wellknown manner.

In using the rest the operator first turns the screw 10 to unclamp theears 3 and 5 from the depending lug 7 of the rest C, next turns thescrew 24 to swing the rest on its pivot and bring the tool to itsrequired position, and then reclamps the rest by firmly screwing up thesaid binding-screw.

The improved tool-rest herein described is especially adapted for use onlathes having the so-called gibbed carriages.

Having thus described my invention, Iv

claim- 1. In a tool-rest, the combination, with the base having theupwardly-projecting side walls forming ears concentric to the axis ofthe adjustable rest and carrying the pivot for said rest, of the restpivoted between said side walls and fitted to the upper edges thereof, abinding-screw clam ping: and uuelamping the ears to and from the rest,and means for swinging the rest on its pivotwhen unclamped,substantially as described.

2. In a tool-rest, the combination, with the base having the ears 3 and5 and carrying the pivot for the rest, of the rest G, pivotallysupported on said pivot and closely fitting between said ears, abinding-screw, substantially as described, for clamping and unclampingthe rest, the nut 17, pivotally supported on the base, and the adjusting-serew connected,

substantially as described, to the rest and fitting said nut,substantially as described.

3. In a tool-rest, the combination, with the base having theupwardlyprojecting side walls forming ears concentric to the axis of theadjustable rest and carrying the pivotpin 8 for said rest, of the rest0, carried by said pivot-pin and closely fitting between said ears andhaving the slot 12, and the clampscrew 10, passing through said ears andslot, whereby the rest may be clamped and unclamped, substantially asshown.

LEVERETT E. RHODES. \Vitnesses:

FRANCIS H. RICHARDS, HENRY L. RECKARD.

